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Office 365 email archive migration

Move legacy email archives to Office 365: quickly, easily & securely.
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TransVault is the compliant, quick and seamless-to-user way to migrate email archives to Microsoft Office 365

It combines ultra-fast extractions from virtually any archive source with the most efficient ingestion into Microsoft’s cloud to reach unbeatable Office 365 migration speeds of up to 7TBs a day.

Advanced shortcut handling and status preservation ensures email archives remain seamlessly accessible to users post-migration.

Plus TransVault is the only solution that moves your data in one-step, end-to-end, with no interim formats or temporary storage.  This makes your move fast and efficient, but importantly, it guarantees full and demonstrable chain-of-custody for your data.

You also get complete auditing and support for journal migration into the Office 365 compliance model, enabling you to move sensitive data with confidence and use Office 365 as a one-stop-shop for retention management and eDiscovery.  Alternatively, you can use TransVault to move journals into Microsoft Azure, and keep running your journals in Azure going forwards – the choice is yours!

Some of the awkward conversations you’ll have when you don’t use TransVault to migrate…

Why migrate email archives to Office 365 with us

Clean, Reliable

There’s no interim stages or file formats that add time, complexity and risk to your move.  The movement of data is automated via a high-performance, multi-threaded engine, that connects directly from your source archive into Office 365.

Ultra Fast

Our unique TransVault CloudStream technology combines Microsoft best practices with our own expert algorithms and intelligent throttling to guarantee unbeatable ingestion speeds and minimal impact on your network.


As you migrate, legacy mailbox shortcuts (stubs) are cleaned up to avoid confusion. TransVault also ensures archived email is re-hydrated into the correct folders and that access rights are maintained for all the right people post-migration.

Intelligent, Incisive

TransVault lets you perform selective, policy-based migrations based on multiple criteria so you only take the data you need. For example:

  • Only move items within your retention policies
  • DON’T migrate items where users have deleted their shortcut
  • Move emails >7 years to In-Place Archives


TransVault’s full chain-of-custody, data integrity checks, audit reports and remediation services meet the most stringent legislation relating to email records handling. You can also move journal archives from on-prem or cloud-based services, using TransVault Compliance TimeMachine to preserve vital metadata (i.e. past Bcc’d and distribution list recipients) for eDiscovery.


Proven in over 2,000 projects, TransVault’s unrivalled pedigree, high-performance engine, complete auditing and emphasis on a seamless experience for end-users, ensures a transition to Office 365 that satisfies the most demanding technical, compliance and business needs.

Ready to migrate your archives to Office 365?

“TransVault has been very helpful on this complex issue of EV Notes to EV Exchange migration planning. Outstanding support from very knowledgeable engineers. Thank you!”

Salim Othman - Bluesource Information Ltd

“Thanks very much for the support provided to a fledgling TransVault engineer; much appreciated!”

Derek Lewinson - EMC

“I have to say that I have been impressed by TransVault's agility and flexibility throughout our Office 365 migration project”

Messaging Specialist - Large IT Services Company

“One of the biggest challenges in archive migrations is that there is always something different. I can go to TransVault and my problem goes away very quickly. I've worked with many new partners in Symantec and we've never had the support like we do from TransVault. I've yet to see another partner who can deliver like that.”

David DeMings - Symantec

“I'm not sure if you have visibility on this, but wanted to drop a quick note of THANKS for your help in getting such quick support and turnaround. It was very important to our client, and I think they were impressed that TV really stepped up and took responsibility for getting the job done.”

Dan Sullivan - US Amplify

“TransVault has pioneered the migration market space and has produced a benchmark whereby all migration companies are measured.”

Dennis Wild - Product Manager, Archiving (IAP) at Hewlett-Packard

“You guys are legend!!! Thanks very much!!!!!!!!!!!!!!!!”

Max Massioni - Consultant, Bluesource

“I figured I'd share some feedback regarding TransVault. I must confess that these migration rates are certainly amazing now that the processes are running. A good average throughput comes to just roughly under 20GB per hour. Not one other tool in the market produces these results! I guess I couldn't keep this to myself.”

Chris Mathe - Account Executive, US-Amplify

“Archive migrations are technically (and politically) challenging projects. Our archiving expertise, combined with our project management methodologies and Transvault's advanced archive migration capabilities, enable us to meet customer requirements that are completely out of reach for any sort of "brute force" approach ”

JD Creedon - GlassHouse

“We're one of Microsoft's go-to partners for migrations to Office365. TransVault enables us to add significant value for both Microsoft and our customers by selectively migrating archived mail directly to Office365 along with mailboxes and live mail.”

Jerry Martin - Core BTS

“TransVault's partner certification a challenging and tough yet well written exam for a terrific product.”

Ben Shorehill - Insentra

“TransVault Insight has been designed and developed by a team that understands the business needs of orgs. This team has worked with large global 2000 enterprise customers with 100ks of employees dispersed across multiple global server sites.”

Andrew Moffat - Founder of Educom (Original author of EAS)

“On Monday morning our users came in to find all their e-mails and address books intact and fully functional. We could just get on with business as usual.”

Eugene vanVueren - IT manager - Webber Wentzel Bowens

“I would say that the project was very well co-ordinated and went about as smooth as it can go!”

John Twilley - Senior Network Engineer - Catalina Marketing

“I would like to give you all a huge thank you for all your hard work and effort that was put into finding such a speedy solution to migrating Japanese messages. This quick solution has put us in a seriously good light with our client. You guys have an unbelievably professional team and are an absolute pleasure to work with.”

Warren Marks - Senior Engineer - SOARsoft Africa
Used by more than 2,000 enterprises around the world
Ready to migrate your archives to Office 365?
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